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[190.5.140.142]) by smtp.gmail.com with ESMTPSA id a1e0cc1a2514c-849399971dfsm3226559241.26.2024.09.23.07.55.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Sep 2024 07:55:27 -0700 (PDT) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: dfcc3d57-79bb-11ef-99a2-01e77a169b0f DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1727103329; x=1727708129; darn=lists.xenproject.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=pBoxVH+Ru8Cf8WZg/qIWXUyc6DjCMqmFHFamf1lm7RE=; b=dX5sjy9+yWLfarf1scATDY2zpEhlwdFAeBqML8Ad1gxK6jAUTKLmlu8SlraW11LKxE aiQMKyPqbnocbWV1h+SQLF80tdlH2yMgPpmr5pLbl37Sf88GR8bdkKxRLX/Y9qiFhMki Y3G8KdP+oFMb/vuxQBwWQcCAx8L/trqRyTDyqwBCQ+oBIFPPBK9XMI9b46PhN0xLrdLV DblqQMaeQbKECM0sPCYw5FSvOjCzf+twxpzPQlmM4JMuMThrKcni+8hrD3M+y1+78HgJ ASiaAell2Z0L2tlIhvSUAkIrCeTTkmL2WC1cswvny2GyeAtUw25nZZMugQls3gy8NWSr rmsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727103329; x=1727708129; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=pBoxVH+Ru8Cf8WZg/qIWXUyc6DjCMqmFHFamf1lm7RE=; b=Gv2ohFFychS416vGOJBvhH4GIg0yqK+82cChO+K6v5CKXjs1hfc3OOmzfaV20405X5 jkeXuf9sjqjSvqKP3akrxYY+ntN/HnZ2MEMixKz8IDUguHVwdvZKGGtp26IZHOlVDsYl qkoc0VNS/LNUQePL5Cjiw4l+VtInwGQMItxRvbIKp3g5rn+fyToaZWv/aoj0PsqoiA1r j1BXBvxJT1JyttZzCfAy2opauy/ZuUP3goYitnn8lV31OSTVjb9rS57fser9+1rwQKC3 18zZrSKwXxgv+ZFe7yVy/DmLpUSx2oHdbPH6N0phrgCUSb/3N/Q5zw2K6Wspe4IqqSek eA6g== X-Forwarded-Encrypted: i=1; AJvYcCWK93c/PsutYevBUHJoB0RJ+UDBNw166+En1JB5QYjOZTwdVChhNucu/HfLwZ/9dFrSpYEgH6zOeUI=@lists.xenproject.org X-Gm-Message-State: AOJu0Yw5ow+kpNnNrUj/Js1/WAez3zUDzzWJZfnkCRKn+FdsfbI0s50S CgmQga0ZMnW29lJI79I2pgNIkjw6YjqOgoG5t6SHsm/psRyOecGu X-Google-Smtp-Source: AGHT+IEVIq+5zTRJIDiwVEZ//hmPV3dnxQ6KGiEO/YrKl7+YpgOR25Qn3clhu6UZuNekZAImrbXJhA== X-Received: by 2002:a05:6102:94c:b0:498:e25c:738f with SMTP id ada2fe7eead31-49fc7624bf3mr7212517137.18.1727103328687; Mon, 23 Sep 2024 07:55:28 -0700 (PDT) From: "Edgar E. Iglesias" To: qemu-devel@nongnu.org Cc: sstabellini@kernel.org, anthony@xenproject.org, paul@xen.org, peter.maydell@linaro.org, alex.bennee@linaro.org, edgar.iglesias@amd.com, xen-devel@lists.xenproject.org, "Edgar E. Iglesias" , Paolo Bonzini , Richard Henderson , Eduardo Habkost , "Michael S. Tsirkin" , Marcel Apfelbaum , qemu-arm@nongnu.org Subject: [PATCH v2 2/4] hw/xen: xenpvh: Disable buffered IOREQs for ARM Date: Mon, 23 Sep 2024 16:55:18 +0200 Message-ID: <20240923145520.1323504-3-edgar.iglesias@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240923145520.1323504-1-edgar.iglesias@gmail.com> References: <20240923145520.1323504-1-edgar.iglesias@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1727103372790116600 Content-Type: text/plain; charset="utf-8" From: "Edgar E. Iglesias" Add a way to enable/disable buffered IOREQs for PVH machines and disable them for ARM. ARM does not support buffered IOREQ's nor the legacy way to map IOREQ info pages. See the following for more details: https://xenbits.xen.org/gitweb/?p=3Dxen.git;a=3Dcommitdiff;h=3D2fbd7e609e18= 03ac5e5c26e22aa8e4b5a6cddbb1 https://xenbits.xen.org/gitweb/?p=3Dxen.git;a=3Dblob;f=3Dxen/arch/arm/ioreq= .c;h=3D2e829d2e7f3760401b96fa7c930e2015fb1cf463;hb=3DHEAD#l138 Signed-off-by: Edgar E. Iglesias Reviewed-by: Stefano Stabellini --- hw/arm/xen-pvh.c | 3 +++ hw/i386/xen/xen-pvh.c | 3 +++ hw/xen/xen-pvh-common.c | 2 +- include/hw/xen/xen-pvh-common.h | 3 +++ 4 files changed, 10 insertions(+), 1 deletion(-) diff --git a/hw/arm/xen-pvh.c b/hw/arm/xen-pvh.c index 04cb9855af..28af3910ea 100644 --- a/hw/arm/xen-pvh.c +++ b/hw/arm/xen-pvh.c @@ -66,6 +66,9 @@ static void xen_arm_machine_class_init(ObjectClass *oc, v= oid *data) */ mc->max_cpus =3D GUEST_MAX_VCPUS; =20 + /* Xen/ARM does not use buffered IOREQs. */ + xpc->handle_bufioreq =3D HVM_IOREQSRV_BUFIOREQ_OFF; + /* List of supported features known to work on PVH ARM. */ xpc->has_tpm =3D true; xpc->has_virtio_mmio =3D true; diff --git a/hw/i386/xen/xen-pvh.c b/hw/i386/xen/xen-pvh.c index 45645667e9..f1f02d3311 100644 --- a/hw/i386/xen/xen-pvh.c +++ b/hw/i386/xen/xen-pvh.c @@ -89,6 +89,9 @@ static void xen_pvh_machine_class_init(ObjectClass *oc, v= oid *data) /* We have an implementation specific init to create CPU objects. */ xpc->init =3D xen_pvh_init; =20 + /* Enable buffered IOREQs. */ + xpc->handle_bufioreq =3D HVM_IOREQSRV_BUFIOREQ_ATOMIC; + /* * PCI INTX routing. * diff --git a/hw/xen/xen-pvh-common.c b/hw/xen/xen-pvh-common.c index 08641fdcec..76a9b2b945 100644 --- a/hw/xen/xen-pvh-common.c +++ b/hw/xen/xen-pvh-common.c @@ -195,7 +195,7 @@ static void xen_pvh_init(MachineState *ms) =20 xen_pvh_init_ram(s, sysmem); xen_register_ioreq(&s->ioreq, ms->smp.max_cpus, - HVM_IOREQSRV_BUFIOREQ_ATOMIC, + xpc->handle_bufioreq, &xen_memory_listener); =20 if (s->cfg.virtio_mmio_num) { diff --git a/include/hw/xen/xen-pvh-common.h b/include/hw/xen/xen-pvh-commo= n.h index bc09eea936..5cdd23c2f4 100644 --- a/include/hw/xen/xen-pvh-common.h +++ b/include/hw/xen/xen-pvh-common.h @@ -43,6 +43,9 @@ struct XenPVHMachineClass { */ int (*set_pci_link_route)(uint8_t line, uint8_t irq); =20 + /* Allow implementations to optionally enable buffered ioreqs. */ + uint8_t handle_bufioreq; + /* * Each implementation can optionally enable features that it * supports and are known to work. --=20 2.43.0